emissions

In a major victory for the Obama administration, the Supreme Court on Tuesday upheld the authority of the Environmental Protection Agency to regulate the smog from coal plants that drifts across state lines from 28 Midwestern and Appalachian states to the East Coast.

Air quality regulators, embarking on a bold new strategy to reduce smog in Southern California, want to hold the ports of Los Angeles and Long Beach responsible for their pledges to cut pollution from thousands of trucks, ships and trains carrying goods to and from the nation's largest port complex.